高等级公路的设计,先在大比例尺地形图上定出路线,在图上量取各交点(包括路线起点和终点)的坐标,定出圆曲线的半径和缓和曲线长度,据此计算路线各中桩的坐标,然后将仪器置于实地布设的导向点上,利用各中桩的坐标,将其直接测设在实地上。实际上,高等级公路施工测量中,不仅仅测 The design of high-grade highways first set the route on the large-scale topographic map, take the coordinates of each intersection (including the start and end of the route) on the map, set the radius of the circular curve and the length of the ease curve, calculate the route The coordinates of the pile, and then the instrument placed on the field layout of the guide point, the use of the coordinates of the pile, it will be directly measured in the field. In fact, high-grade highway construction measurement, not only measured